That's the problem with desktop-like UI, it's created by lazy developers. They used and learnt RAD ten years ago and they don't want to bother to learn HTML and how the web works.
The great thing about an IDE like this is that it can be a foundation for RAD projects - it could let IT departments finally move those aging VB6 / Access applications to the web.
Building actual business applications on top of this, even if you know how the web works, has always been pretty much a kludge.